Home / 399,957.12-551,582.88-331,865.76

Finding the Fourth Proportional to 399,957.12, 551,582.88 and 331,865.76

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Solution

The fourth proportional to 399,957.12, 551,582.88 and 331,865.76 is: 457,677.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,957.12 : 551,582.88 = 331,865.76 : x
  2. Step 2: Convert to fraction form
    399,957.12/551,582.88 = 331,865.76/x
  3. Step 3: Cross multiply
    399,957.12x = 551,582.88 × 331,865.76
  4. Step 4: Simplify right side
    399,957.12x = 183,051,471,674.19
  5. Step 5: Solve for x
    x = 183,051,471,674.19/399,957.12
  6. Step 6: Final answer
    x = 457,677.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.